Check GMAT Club Decision Tracker for the Latest School Decision Releases https://gmatclub.com/AppTrack

 It is currently 23 May 2017, 12:08

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# Economist Reading Comprehension Challenge #6

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
TAGS:

### Hide Tags

Manager
Joined: 27 Jan 2013
Posts: 230
GMAT 1: 780 Q49 V51
Followers: 51

Kudos [?]: 222 [3] , given: 32

Economist Reading Comprehension Challenge #6 [#permalink]

### Show Tags

08 Aug 2013, 16:12
3
This post received
KUDOS
Expert's post
1
This post was
BOOKMARKED
Hi All,

Welcome to the 6th installment of the Economist Reading Comprehension Challenge! Many of my GMAT students complain about the difficulties they have with science passages so I picked out a science topic for this week's challenge. For reading comprehension tips and for more information about how to approach your GMAT reading take a look at the first RCC thread: http://gmatclub.com/forum/the-economist-reading-comprehension-challenge-151479.html

Happy Studies,

HG.

Here is a link to the article: http://www.economist.com/news/science-and-technology/21582243-biggest-extinction-history-was-probably-caused-space-rock-changed

Small but Deadly

1. Which of the following is most strongly supported about the extinctions mentioned in the first paragraph of the passage?

A. They had similar causes but different outcomes

B. They were similar in that they each wiped out over 80% of the animal species on earth

C. There were similar extinctions before the Cambrian period

D. It is unknown whether they had different causes

E. Their combined force permitted the rise of the reptiles

2. According to the passage which of the following is implied about mammals before the Cretaceous period?

A. Their flourishing was at least partially suppressed by competition with other species

B. Having gone under rapid evolution they faced fierce competition from more established organisms.

C. They evolved specialized social behavior which helped them rise out of obscurity in the post-Cambrian period.

D. They were better adapted than most other species to deal with changing atmospheric conditions.

E. Fewer species of them became extinct than species of reptiles

3. Which of the following statements is best supported about the weakened ecosystems mentioned in the 4th paragraph of the passage?

A. Some species benefited from a weakening of the world’s ecosystem

B. During periods of more frequent volcanic eruptions the ecosystem was more disrupted than during periods with fewer volcanic eruptions

C. Some of the volcanic eruptions were the effect and not the cause of some of the weakened ecosystems

D. They were the primary cause of the extinctions in the Cretaceous period.

E. The weakened ecosystems were the most important amongst several factors that caused an abrupt extinction at the end Permian period

4. According to the passage Dr. Tohver would most likely agree that each of the following were major contributors to the extinctions in the Cambrian period EXCEPT:

A. The mix of gasses in the atmosphere

B. uncharacteristic seismic activity

C. an increase in volcanic eruptions

D. Global warming

E. The geology of Araguainha

Answers:
[Reveal] Spoiler:
1. D
2. A
3. A
4. C

_________________

"It is a curious property of research activity that after the problem has been solved the solution seems obvious. This is true not only for those who have not previously been acquainted with the problem, but also for those who have worked over it for years." -Dr. Edwin Land

GMAT vs GRE Comparison

If you found my post useful KUDOS are much appreciated.

IMPROVE YOUR READING COMPREHENSION with the ECONOMIST READING COMPREHENSION CHALLENGE:

Here is the first set along with some strategies for approaching this work: http://gmatclub.com/forum/the-economist-reading-comprehension-challenge-151479.html

Last edited by HerrGrau on 11 Aug 2013, 08:06, edited 1 time in total.
If you have any questions
you can ask an expert
New!
 Economist GMAT Tutor Discount Codes Kaplan GMAT Prep Discount Codes Optimus Prep Discount Codes
Intern
Status: WIP........
Joined: 12 Jun 2013
Posts: 4
Location: India
Concentration: International Business, Strategy
GMAT Date: 08-30-2013
GPA: 3.38
Followers: 0

Kudos [?]: 9 [1] , given: 0

Re: Economist Reading Comprehension Challenge #6 [#permalink]

### Show Tags

11 Aug 2013, 01:40
1
This post received
KUDOS
4. According to the passage Dr. Tohver would most likely agree that each of the following were major contributors to the extinctions in the Cambrian period EXCEPT:[/b]

A. The mix of gasses in the atmosphere

B. uncharacteristic seismic activity

C. an increase in volcanic eruptions

D. Global warming

E. The geology of Araguainha

I think the answer of this question must be C because Dr. tohver do accept that it was global warming that initiated the extinction, but he lend no support to volcanic eruption as the cause of extinction.

Guys could you plz.. help.......-- Thanks.
Manager
Joined: 27 Jan 2013
Posts: 230
GMAT 1: 780 Q49 V51
Followers: 51

Kudos [?]: 222 [0], given: 32

Re: Economist Reading Comprehension Challenge #6 [#permalink]

### Show Tags

11 Aug 2013, 08:09
Hi Sohrab,

Great job on this! You are 100% correct. I typed in the wrong answer. All of the others (Global Warming, The Gasses, The Seismic Activity, the Composition of the land) were mentioned. Dr. Tohver is actually saying that the eruptions were not a major factor. Really solid work picking this out. Let me know if you have any further questions.

Happy Studies,

HG.
_________________

"It is a curious property of research activity that after the problem has been solved the solution seems obvious. This is true not only for those who have not previously been acquainted with the problem, but also for those who have worked over it for years." -Dr. Edwin Land

GMAT vs GRE Comparison

If you found my post useful KUDOS are much appreciated.

IMPROVE YOUR READING COMPREHENSION with the ECONOMIST READING COMPREHENSION CHALLENGE:

Here is the first set along with some strategies for approaching this work: http://gmatclub.com/forum/the-economist-reading-comprehension-challenge-151479.html

GMAT Club Legend
Joined: 01 Oct 2013
Posts: 10370
Followers: 996

Kudos [?]: 224 [0], given: 0

Re: Economist Reading Comprehension Challenge #6 [#permalink]

### Show Tags

18 Apr 2015, 03:21
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
Intern
Joined: 27 Jan 2015
Posts: 15
GMAT 1: 580 Q50 V19
WE: Corporate Finance (Consumer Products)
Followers: 0

Kudos [?]: 1 [0], given: 377

Re: Economist Reading Comprehension Challenge #6 [#permalink]

### Show Tags

18 Apr 2015, 04:02
HerrGrau wrote:
Hi Sohrab,

Great job on this! You are 100% correct. I typed in the wrong answer. All of the others (Global Warming, The Gasses, The Seismic Activity, the Composition of the land) were mentioned. Dr. Tohver is actually saying that the eruptions were not a major factor. Really solid work picking this out. Let me know if you have any further questions.

Happy Studies,

HG.

Hi! HerrGrau,
I have a doubt about the answer E.
4. According to the passage Dr. Tohver would most likely agree that each of the following were major contributors to the extinctions in the Cambrian period EXCEPT
According to the passage, Dr. Tohver redated the Araguainha crate to 257.4m years, while the Cambrian period is about 541m ago. So how can Dr. Tohver agree that the geology of Araguainha could be a contributors to the extinctions in the Cambiran period?
Intern
Joined: 16 May 2015
Posts: 8
Followers: 0

Kudos [?]: 6 [0], given: 0

Economist Reading Comprehension Challenge #6 [#permalink]

### Show Tags

21 May 2015, 01:38
Can someone help me with question 3? Where is it mentioned, that some species benefit from a weakened ecosystem?
Economist Reading Comprehension Challenge #6   [#permalink] 21 May 2015, 01:38
Similar topics Replies Last post
Similar
Topics:
6 Economist Reading Comprehension Challenge #5 8 07 Jun 2016, 10:45
9 The Economist Reading Comprehension Challenge #4 7 28 Jul 2016, 00:52
10 The Economist Reading Comprehension Challenge #3 10 10 Feb 2017, 15:37
15 The Economist Reading Comprehension Challenge #2 13 08 Sep 2016, 02:33
98 The Economist Reading Comprehension Challenge 19 16 Dec 2015, 07:00
Display posts from previous: Sort by

# Economist Reading Comprehension Challenge #6

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics

 Powered by phpBB © phpBB Group and phpBB SEO Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.